sharp-chat/SharpChat.SQLite/SQLiteMessageStorage.cs

using SharpChat.Messages;
using System.Data;
using System.Data.Common;
using System.Data.SQLite;
using System.Text;
using System.Text.Json;

namespace SharpChat.SQLite;

public class SQLiteMessageStorage(SQLiteConnection conn) : MessageStorage {
    public async Task LogMessage(
        long id,
        string type,
        string channelName,
        string senderId,
        string senderName,
        ColourInheritable senderColour,
        int senderRank,
        string senderNick,
        UserPermissions senderPerms,
        object? data = null
    ) {
        try {
            await conn.RunCommand(
                "INSERT INTO messages (msg_id, msg_type, msg_created, msg_channel, msg_sender, msg_sender_name, msg_sender_colour, msg_sender_rank, msg_sender_nick, msg_sender_perms, msg_data)"
                + " VALUES (@id, @type, @created, @channel, @sender, @sender_name, @sender_colour, @sender_rank, @sender_nick, @sender_perms, @data)",
                new SQLiteParameter("id", id),
                new SQLiteParameter("type", type),
                new SQLiteParameter("created", $"{DateTimeOffset.UtcNow:s}Z"),
                new SQLiteParameter("channel", string.IsNullOrWhiteSpace(channelName) ? null : channelName),
                new SQLiteParameter("sender", long.TryParse(senderId, out long senderId64) && senderId64 > 0 ? senderId64 : null),
                new SQLiteParameter("sender_name", senderName),
                new SQLiteParameter("sender_colour", senderColour.Rgb.HasValue ? senderColour.Rgb.Value.Raw : null),
                new SQLiteParameter("sender_rank", senderRank),
                new SQLiteParameter("sender_nick", string.IsNullOrWhiteSpace(senderNick) ? null : senderNick),
                new SQLiteParameter("sender_perms", SQLiteUserPermissionsConverter.To(senderPerms)),
                new SQLiteParameter("data", data == null ? "{}" : JsonSerializer.SerializeToUtf8Bytes(data))
            );
        } catch(SQLiteException ex) {
            Logger.Write(ex);
        }
    }

    public async Task DeleteMessage(Message msg) {
        try {
            await conn.RunCommand(
                "UPDATE IGNORE messages SET msg_deleted = NOW() WHERE msg_id = @id AND msg_deleted IS NULL",
                new SQLiteParameter("id", msg.Id)
            );
        } catch(SQLiteException ex) {
            Logger.Write(ex);
        }
    }

    private static Message ReadMessage(DbDataReader reader) {
        return new Message(
            reader.GetInt64("msg_id"),
            reader.GetString("msg_type"),
            reader.IsDBNull(reader.GetOrdinal("msg_sender")) ? null : reader.GetString("msg_sender"),
            reader.IsDBNull(reader.GetOrdinal("msg_sender_name")) ? string.Empty : reader.GetString("msg_sender_name"),
            ColourInheritable.FromMisuzu(reader.GetInt32("msg_sender_colour")),
            reader.GetInt32("msg_sender_rank"),
            SQLiteUserPermissionsConverter.From((SQLiteUserPermissions)reader.GetInt32("msg_sender_perms")),
            reader.IsDBNull(reader.GetOrdinal("msg_sender_nick")) ? string.Empty : reader.GetString("msg_sender_nick"),
            DateTimeOffset.Parse(reader.GetString("msg_created")),
            reader.IsDBNull(reader.GetOrdinal("msg_deleted")) ? null : DateTimeOffset.Parse(reader.GetString("msg_deleted")),
            reader.IsDBNull(reader.GetOrdinal("msg_channel")) ? null : reader.GetString("msg_channel"),
            JsonDocument.Parse(reader.GetString("msg_data"))
        );
    }

    public async Task<Message?> GetMessage(long id) {
        try {
            using DbDataReader? reader = await conn.RunQuery(
                "SELECT msg_id, msg_type, msg_created, msg_deleted, msg_channel, msg_sender, msg_sender_name, msg_sender_colour, msg_sender_rank, msg_sender_nick, msg_sender_perms, msg_data"
                + " FROM messages WHERE msg_id = @id",
                new SQLiteParameter("id", id)
            );

            if(reader is null)
                return null;

            while(reader.Read()) {
                Message evt = ReadMessage(reader);
                if(evt != null)
                    return evt;
            }
        } catch(SQLiteException ex) {
            Logger.Write(ex);
        }

        return null;
    }

    public async Task<IEnumerable<Message>> GetMessages(string channelName, int amount = 20, int offset = 0) {
        List<Message> msgs = [];

        try {
            using DbDataReader? reader = await conn.RunQuery(
                "SELECT msg_id, msg_type, msg_created, msg_deleted, msg_channel, msg_sender, msg_sender_name, msg_sender_colour, msg_sender_rank, msg_sender_nick, msg_sender_perms, msg_data"
                + " FROM messages"
                + " WHERE msg_deleted IS NULL AND (msg_channel = @channel OR msg_channel IS NULL)"
                + " AND msg_id > @offset"
                + " ORDER BY msg_id DESC"
                + " LIMIT @amount",
                new SQLiteParameter("channel", channelName),
                new SQLiteParameter("amount", amount),
                new SQLiteParameter("offset", offset)
            );
            if(reader is null)
                return msgs;

            while(reader.Read()) {
                Message evt = ReadMessage(reader);
                if(evt != null)
                    msgs.Add(evt);
            }
        } catch(SQLiteException ex) {
            Logger.Write(ex);
        }

        msgs.Reverse();

        return msgs;
    }
}